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HydroSense II Soil Moisture Measurement System

PER – The average period of the water content reflectometer

(CS658/9). The value is displayed in microseconds.

Below the sensor readings is displayed the model number and rod length of the

sensor used (in this case “CS658 20cm”). This is updated with each

measurement.

If the water content sensor is not properly connected or malfunctioning, the

display will show “SENSOR TIMEOUT” as shown above.

6.3.4 Deficit Display

When deficit mode is enabled, the water deficit section is displayed on the centre

right of the main screen. The top screenshot shows the main screen with deficit

mode disabled and the bottom screenshot is with deficit mode enabled.

The water deficit section contains the following information:

Soil type - This is soil number 1 to 10.

RWC - relative water content from 0% to 100% where 0% represents

“dry” (wilting point) and 100% is “wet” (field capacity).

DEF – water deficit expressed in mm of rain.

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Campbell HydroSense II Guida Utente Pagina 16